Plasma-melting electrode electric arc dynamic composite welding device and welding method thereof

A melting electrode welding and composite welding technology, which is applied in welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of complex parameter adjustment, large arc electromagnetic interference, and electrode burnout, and achieve high weld seam quality and welding defects. Less, the effect of increasing welding speed

Active Publication Date: 2015-04-08
HARBIN ENG UNIV
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  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a plasma-melting electrode arc dynamic composite welding device and its welding method that solve the problems of large electromagnetic interference between arcs, complicated parameter adjustment and serious electrode burning.

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  • Plasma-melting electrode electric arc dynamic composite welding device and welding method thereof
  • Plasma-melting electrode electric arc dynamic composite welding device and welding method thereof
  • Plasma-melting electrode electric arc dynamic composite welding device and welding method thereof

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specific Embodiment approach 1

[0034] Fig. 1 is a schematic diagram of plasma-melting electrode dynamic arc hybrid welding method and device implementation, the welding device is mainly composed of melting electrode pulse arc welding power supply 1, DC plasma pulse arc welding power supply 8, TIG arc welding power supply 5, and wire feeding mechanism 3 , current signal detection devices 2 and 6, pulse coordination controller 4, plasma torch 10 and melting electrode torch 13 and so on. During welding, the plasma arc welding torch 10 and the melting electrode welding torch 13 are combined to form a composite welding torch, and the angle α between the axes of the two welding torches is 0-90°. Connecting the workpiece 9 constitutes a plasma welding current circuit; while the positive pole of the melting pole arc welding power supply 1 is connected to the current signal detection device 2 and connected to the welding wire contact tip of the melting pole welding torch 13, and the negative pole is connected to the ...

specific Embodiment approach 2

[0041] Fig. 2 is a schematic diagram of plasma arc welding / plasma-melting electrode indirect arc welding / melting electrode arc dynamic composite welding method and device implementation, the welding device is mainly composed of pulse melting electrode arc welding power supply 1, DC pulse plasma arc welding power supply 8, TIG arc welding power supply 5, wire feeding mechanism 3, current pulse signal detection devices 2, 6 and 14, pulse coordination controller 4, plasma arc welding torch 10 and melting electrode welding torch 13 and so on. During welding, the plasma arc welding torch 10 and the melting electrode welding torch 13 are combined to form a composite welding torch, the angle α between the axes of the two welding torches is 0-90°, and the positive pole of the melting electrode arc welding power supply 1 is connected to the current signal detection device 2 and the melting welding torch 13 welding wire contact tips, the negative electrode is connected to the workpiece 9...

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Abstract

The invention provides a plasma-melting electrode electric arc dynamic composite welding device and a welding method thereof. A plasma arc welding gun is combined with a melting electrode electric arc welding gun to obtain a composite welding gun; the two electric arc welding guns are respectively connected with a negative pole of a direct-current pulsed plasma arc welding power supply and a positive pole of a direct-current pulsed melting electrode arc welding power supply and are also connected with a negative pole and a positive pole of an argon arc welding power supply (a TIG power supply); and a negative pole of the plasma arc welding power supply and a positive pole of the melting electrode arc welding power supply are connected with a workpiece. In order to prevent electromagnetic interference between a plasma arc and a melting electrode electric arc during welding, a pulsed coordination control method is used, namely, when melting electrode electric arc current waveform is a pulsed basic value pilot arc, the plasma arc is a pulse peak value, and welding is carried out; and when plasma arc current waveform is a pulse basic value, the melting electrode arc is pulse peak value welding current, and so forth. By the plasma-melting electrode electric arc dynamic composite welding device and the welding method thereof, the problems that electromagnetic interference between electric arcs is large, parameters are adjusted complexly, and electrodes are burnt down severely are solved.

Description

technical field [0001] The invention relates to a welding device and a welding method thereof. Background technique [0002] Traditional arc welding processes such as tungsten argon arc welding (TIG), metal arc welding (MIG / MAG), and plasma arc welding (PAW) are still widely used in the manufacturing industry due to low cost, easy operation, and strong adaptability. . As the manufacturing industry continues to increase welding efficiency and improve welding quality, it is essential to continuously improve and develop traditional arc welding processes and equipment. In recent years, two or more heat sources are combined to form a composite welding process, which makes the advantages of the heat sources complement each other, can replace or improve the conventional arc welding process, and improve the quality of product manufacturing. For example, the plasma-MIG hybrid welding proposed by the Dutch PHILIPS company greatly improves the welding efficiency compared with the con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K28/02
CPCB23K28/02
Inventor 苗玉刚吴斌涛韩端锋
Owner HARBIN ENG UNIV
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